This is such a nice old piece worn as a very special and different necklace regardless of spiritual persuasion. I think it could have also been listed under a spiritual/ethnic heading.
The ring pieces that form the main links of the necklace have a cord running through which gives it strength and denotes the classical way of creating a chain.
The length has been extended by adding a lace which seems not to detract from the piece and it makes it wearable as a necklace.
2 inches x 1 inch